Albus believes that his father, Harry, seems to be dismayed that he ended up in Slytherin House.
Harry says to Albus quite pointedly that he would be proud of him if that did in fact happen:
“Albus Severus,” ... “you were named for two headmasters
of Hogwarts. One of them was a Slytherin and he was probably
the bravest man I ever knew.”
“But just ...
To be truth, we do not see if the house is occupied or abandoned.
As far as we know, the property could be reclaimed, someone could be living there and taking care of the structure.
Rey doesn't need to come and kill the residents, it just has to ask politely for permission to "pay her respects"
TOS tackled numerous social issues, but sexual orientation wasn't among them. The first foray for the franchise came at it sideways in the TNG episode "The Outcast" (Riker and the J'naii). The DS9 mirror universe stories took the issue a little more in stride with "mirror Kira".
Remember that as forward-thinking as the original Star Trek series was trying ...
Let's assume, for argument's sake, that Tatooine is just like Earth's sand-swept areas
There's not a lot of things to naturally degrade the buildings
It's a desert, so you have naturally low humidity and probably no serious rainfall, two major things that destroy buildings fast. There's also no nearby mountains for runoff.
Only 20-ish years have passed ...